CVE-2018-7803 Denial of service in Triconex TriStation Emulator V1.2.0
A specially crafted packet can crash the Triconex TriStation Emulator when running in off-line mode, affecting only the testing tool and not plant safety.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-7803?
CVE-2018-7803 is a medium-severity denial of service vulnerability in Triconex TriStation Emulator V1.2.0, published on 22 May 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A CWE-754 Improper Check for Unusual or Exceptional Conditions vulnerability exists in Triconex TriStation Emulator V1.2.0, which could cause the emulator to crash when sending a specially crafted packet. The emulator is used infrequently for application logic testing. It is susceptible to an attack only while running in off-line mode. This vulnerability does not exist in Triconex hardware products and therefore has no effect on the operating safety functions in a plant.
Weakness: CWE-754
Which versions are affected by CVE-2018-7803?
It affects 1 product.
Products include Schneider-Electric Triconex Tristation Emulator.
How do I fix CVE-2018-7803?
No fix has been published for CVE-2018-7803 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2018-7803 being exploited?
There is no known exploitation of CVE-2018-7803 in the wild and no public exploit code.
Sources
Also known as GHSA-gxxv-qg6g-737q.